Calories to Joules
Convert calories (cal) to joules (J). Type in either box; the other updates as you go.
How to convert calories to joules
To convert calories to joules, multiply the number of calories by 4.184.
Example
Convert 5 calories to joules:
Calorie to joule conversion chart
| Calories (cal) | Joules (J) |
|---|---|
| 1 cal | 4.184 J |
| 2 cal | 8.368 J |
| 3 cal | 12.552 J |
| 4 cal | 16.736 J |
| 5 cal | 20.92 J |
| 6 cal | 25.104 J |
| 7 cal | 29.288 J |
| 8 cal | 33.472 J |
| 9 cal | 37.656 J |
| 10 cal | 41.84 J |
| 12 cal | 50.208 J |
| 15 cal | 62.76 J |
| 20 cal | 83.68 J |
| 25 cal | 104.6 J |
| 30 cal | 125.52 J |
| 40 cal | 167.36 J |
| 50 cal | 209.2 J |
| 60 cal | 251.04 J |
| 70 cal | 292.88 J |
| 75 cal | 313.8 J |
| 80 cal | 334.72 J |
| 90 cal | 376.56 J |
| 100 cal | 418.4 J |
| 150 cal | 627.6 J |
| 200 cal | 836.8 J |
| 250 cal | 1,046 J |
| 500 cal | 2,092 J |
| 1,000 cal | 4,184 J |
Going the other way? See the joules to calories chart.
About the units
Calorie (cal)
A small calorie (thermochemical) is exactly 4.184 joules, the energy to warm one gram of water by about one degree Celsius.
Joule (J)
The joule is the SI unit of energy: the work done by a force of one newton over one meter.
Frequently asked questions
How many joules are in a calorie?
There are 4.184 joules in a calorie.
How many calories are in a joule?
There are 0.2390057361 calories in a joule.
How do you convert calories to joules?
To convert calories to joules, multiply the number of calories by 4.184.
What is 5 calories in joules?
5 calories equals 20.92 joules.
Convert between joules, calories, kilocalories, kilowatt-hours and BTU. Open the energy converter to see a value in every unit at once.